World's Tallest Elephant Toothpaste Volcano (I FINALLY DID IT!!)

When life gives you lemons... build a 5 ton flask and blast them to space.
Use promo code ROBER to set up your DraftKings fantasy football team with your crew and get a shot at some great prizes! Check it out here:

Thanks to the good people of Gridley, CA and everyone else who helped out here.

Science Bob has a new page about making Elephant's Toothpaste on your own-

Shoutout to the one and only authentic Orbeez for providing the Orbeez.


If you want to learn the process whereby you can make cool stuff too, join in my Creative Engineering class!!

This class is a hands-on, 30-day learning experience that will teach you how to use engineering and science to bring your creative ideas to life.

During this class, I'm going to share with you my entire creative engineering process from start to finish. You're going to follow along with me as I fully design and engineer 3 brand new builds from scratch... from how I come up with the idea, all the way through bringing the final builds to life.

The best part is, over the month, you'll follow along with me and my process, side by side, and you will leave the class with 3 original, creative builds of your own.

This is the class I wish I had when I was starting out. It's designed to take your skills to make cool stuff to the next level, whether you're a beginner or a more experienced maker/engineer.

See you in class!


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  • When life gives you lemons... build a 5 ton flask and blast them to space.

    Mark RoberMark Rober16 dagen geleden
    • Comment before 500 replies tickets 🎟

      Reverse AlchemistReverse Alchemist4 dagen geleden
    • Hi

      Anime boiAnime boi11 dagen geleden
    • Your devils toothpaste recipe is likly very similar to hydrogen peroxide based rocket fuel but with soap in it

      izzyizzy16 dagen geleden
    • Hi mark!

      UhhhUhhh16 dagen geleden
    • I don't want your lemons! I'm going to instruct my engineers to make a combustible lemon to BURN YOUR HOUSE DOWN! With the lemons. This is Cave Johnson, out.

      SolarboniteSolarbonite16 dagen geleden

    Justin KesslerJustin Kessler30 minuten geleden
  • ❤✌🤘👍

    garduation cookewilliamsongarduation cookewilliamson50 minuten geleden
  • Hahahaha I have never had a party in my life I love your vids Keep on doing the great work 😊🤗

    garduation cookewilliamsongarduation cookewilliamson54 minuten geleden
  • 12:45 your welcome

    Gear Heads UnlimitedGear Heads UnlimitedUur geleden
  • i wish i could do that North carolina is not that fun lol 😂

    Eli BondurantEli Bondurant3 uur geleden
  • When I saw you uploaded I got really excited, even though I was two weeks late… love from Australia 🇦🇺 🦘

    Creambean ;3Creambean ;33 uur geleden
  • make a gun that shoots et

    Kasen LindemanKasen Lindeman4 uur geleden
  • 13:40 Americans will use everything but the metric system :d

    KrisuNaNowoKrisuNaNowo5 uur geleden
  • Jk😂

    ZAP TriggerZAP Trigger5 uur geleden
  • Why was I not invited

    ZAP TriggerZAP Trigger5 uur geleden
  • If only I had a dad that was supportive and empathetic as you.

    I eats babies omnomI eats babies omnom6 uur geleden
  • We need mark rober as our science teacher

    Mask_Mask_6 uur geleden
  • If I were there in the orbee pool I would ask Mark Rober to a challenge to see who can run the furthest on the orbeez

    ritzel chanritzel chan6 uur geleden
  • me just sitting at home watching how much fun they are having and wishing that i could do that

    Kayden GearhartKayden Gearhart6 uur geleden
  • hey i have a very cool suggestion for a thing you could make: a automatic “take 1” bucket so none can actually take more

    Tank _Tank _7 uur geleden

    Kathy VallejoKathy Vallejo7 uur geleden
  • It bothers me that I can’t see it without something being cropped off the top or bottom.

    xtelevisionsetxtelevisionset7 uur geleden
  • Dear friends, I need a little help, I have to buy a laptop because I have a bachelor’s degree in computer, my exam is coming but I don’t have much money for that, I hope you can help me

  • Me:mum can I go to my friends birthday party My mum:no The birthday party:

    YatXerYatXer8 uur geleden
  • Sus

    glassglass8 uur geleden
  • omgeee the tears! This is so sweet and cool👏🏾👏🏾👏🏾

    Brittany JacksonBrittany Jackson9 uur geleden
  • Wow

    Raymond YuRaymond Yu10 uur geleden

    AA10 uur geleden
  • Thank you mark for doing such giving such a great lesson

    Harshit RochiramaniHarshit Rochiramani13 uur geleden
  • Yooooooooo

    Phillip GaukePhillip Gauke13 uur geleden
  • Mark you are a literal magician to me- Your a cool guy

    Ruv_the_russ1an_bassRuv_the_russ1an_bass15 uur geleden
  • Please give the formula of devil's thooth paste

    chandan sinhachandan sinha16 uur geleden
  • 12:50

    Feder RiveraFeder Rivera17 uur geleden

    poke predator07poke predator0717 uur geleden
  • @Mark Rober Can you do a cloud seeding PoC as a forest fire prevention option? If it works, maybe California will fund a large scale one and be saved.

    hifpiehifpie17 uur geleden
  • White boy stuff

    ok okok ok17 uur geleden
  • 'Launched into space' bruh lol

    Mohammad AsifMohammad Asif19 uur geleden
  • Excellent video as always Mark! making dreams come true while using science. are you sponsored by Milwaukee Tool? that's all I saw in the video.

    yaris5150yaris515019 uur geleden
  • Hey

    George AndrewGeorge Andrew20 uur geleden
  • Where’s the squirrel maze 3 I love those videos

    O Shaka mO Shaka m20 uur geleden
  • EPIC.

    Zack ApodacaZack Apodaca20 uur geleden
  • Am I the only one that did not see the draft kings sponsorship coming ?

    Teancum LarsonTeancum Larson20 uur geleden
  • The slimy dinner proximately introduce because prepared effectively occur modulo a mundane bibliography. painful, doubtful server

    Yalmira RodriguezYalmira Rodriguez21 uur geleden
  • Enzo, your N.1 fan

    JoannaJoanna21 uur geleden
  • Hey if you see this comment I heart ideas to make shoes that can walk on walls

    Khyler LovellKhyler Lovell21 uur geleden
  • You should build a blob for the guys on how ridiculous that could hold up to the pressure

    Angela FurgasonAngela Furgason21 uur geleden
    • How does this all get cleaned up……

      JoannaJoanna21 uur geleden
  • Hello

    Katia NavarroKatia Navarro21 uur geleden
  • Btw just so u know, my science and math teacher actually uses ur videos in school! ITS SO FUN, but she literally says that ur 99.9 smarter than most of the world... and I believe her!

    Mya GerMya Ger21 uur geleden
  • Jimmy responds by blowing up a 50 story building with elephant toothpaste

    Bulldog GamesBulldog Games22 uur geleden
  • Will that be seen from space??

    Mohamed Raaif RushdhyMohamed Raaif Rushdhy22 uur geleden
  • Gosh I wish I can meet you mark

    Xavier ConleyXavier Conley22 uur geleden
  • Is that legal??

    KyleSucksAtFnKyleSucksAtFn22 uur geleden
  • Make ninja squirrel obstacle course 3.0

    xavier molinaxavier molina22 uur geleden
  • they're living my dream life, I wish one day I could meet you sir

    Kevin FengKevin Feng22 uur geleden
  • wholesome x 500

    BlufiesBlufies23 uur geleden
  • 13:50 I know Tom Brady would know that feeling

    l_.bxllin_.l Upl_.bxllin_.l UpDag geleden
  • That is the most insanely generous thing I have ever seen.

    Jack Rogers, Jr.Jack Rogers, Jr.Dag geleden
  • Imagine being in the house next to this! I would be so confused!

    Cube NinjaCube NinjaDag geleden
  • roblox.exe

    OGTELLEN7150OGTELLEN7150Dag geleden
    • sonic.exe is the worst creepypasta ever made, and this is coming from a sonic fan.

      JerpyJerpy20 uur geleden

    Franz LisztFranz LisztDag geleden
    • cool

      BlufiesBlufies23 uur geleden
  • How does this all get cleaned up……

    니Dag geleden
  • 9:55 looked like a Symbiote

    BuzzbirBuzzbirDag geleden
  • The faithful parallelogram centrally hug because currency conservatively argue at a third february. abandoned, fearful fearless package

    Simon WangSimon WangDag geleden
  • The devil used some crazy toothpastes

    Reflex BloxReflex BloxDag geleden
  • First time in 3 years commenting on your video your so kind and I love your videos

    Waves OfflineWaves OfflineDag geleden
  • Wish life was this cool for me 😞

    Mega GameplayMega GameplayDag geleden
  • Why does fletcher look like a young ayrton senna

    DeathlyDeathlyDag geleden
  • I wish I was those kids

    TxnBear gamingTxnBear gamingDag geleden
  • Mark is intelligent

    TonyinukpukTonyinukpukDag geleden
  • I DK if possible video or something that can make any person with any level of humor to laugh

    RockinggamerdudeRockinggamerdudeDag geleden
  • RIP his wallet ayyy

    kittycat mittenskittycat mittensDag geleden
  • I love how it made an elephant sound 🤣🥲

    Dag geleden
  • Hi

    Emma OlivierEmma OlivierDag geleden
  • I'm doing a challeng to not watch NLflow but my dad let me watch one channel and it was mark Rober

    Kara DudleyKara DudleyDag geleden
  • What you phone number

    OrangeOrangeDag geleden
  • W- wait is everyone vaccined

    swag boiswag boiDag geleden
  • That lethamyr music during the orbeez scene tho

    Tristan B.Tristan B.Dag geleden

    NyetCatNyetCatDag geleden
  • 2:30 is that Afroman's 'Crazy Rap' ?

    jeremyjwjeremyjwDag geleden
  • thats CONTENTT

    Creativity BurstCreativity BurstDag geleden
  • rewatched your glitterbombs video can you make shotgun traps out of those? it like your property and they are thiefs

    Дмитрий ТумановДмитрий ТумановDag geleden
  • He's gonna do this every year until he dies and we respect that. 😎

    Google SearchGoogle SearchDag geleden

    Cookie PlayzCookie PlayzDag geleden
  • 16:10 that is true even in islam

    ahmed hazemahmed hazemDag geleden
  • The people living at the horizon:ah he's at it again

    Puay SangPuay SangDag geleden
  • For someone to get 16 million views in 2 weeks, which is absolutely ridiculously awesome! You are the chillest guy on NLflow. You go through so much to make people happy. Mark, since I’ve watched your videos, I’ve really had a different look on things and how they work. I would have never though that you could hear a horn from so far away. Even how the simplest things that people drive by all the time which are the grain silos, never new how awesome they are! Carnival games, how smart squirrels are, how far a football can be punted. You’ve covered everything a kid and/or an adult would want to do. My brother has autism and for your son to have autism and for you to make a video of him is extremely difficult because of how people view children and adults with autism. They are extremely smart and honestly they are so much cooler than us! You deserve more than what you have now with the amount of time and effort you put into everything. You probably won’t see this but that’s not why I’m posting this comment, just a comment so people understand just what all you’ve done.

    OmahaCVPI OfficialOmahaCVPI OfficialDag geleden
  • hi

  • U should’ve put a manikin on top

    MVK_ SpazzMVK_ SpazzDag geleden
  • Gives me hope seeing people that found the way of living the dream. Nice work!

    Peter G.Peter G.Dag geleden
  • 😃😃😃😃😃😃

    Jugoal DasJugoal DasDag geleden
  • Bro, I was smiling the whole video. This video is just awesome! This is another reason why I love Mark Rober. Hats off!

    Kuma ChanKuma ChanDag geleden
  • Mr beast is sus

    30k _Vibxs30k _VibxsDag geleden
  • 200 feet

    Kalpana KhanalKalpana KhanalDag geleden

    A mix of everything real life videos gaming videosA mix of everything real life videos gaming videosDag geleden
  • YeS

    dark  MoDedark MoDeDag geleden
  • R.I.P manikins they’ve been through so much :(

    MKCMKCDag geleden
  • Where are the stars???

    Fares-SherifFares-SherifDag geleden
  • Hey Elon Musk and Richard Branson - thanks for giving us a contrast in selfishness!

    Renee BrutvanRenee BrutvanDag geleden
  • You should suprise Nidal wonder

    Safety SpielSafety SpielDag geleden
  • What is quality this is quality 🥳

    QuaneuQuaneuDag geleden
  • This video made my day

    Tony JAHmezTony JAHmezDag geleden
  • I wish I had you come to my party this month

    Bad timeBad timeDag geleden

    Rowan ThainRowan ThainDag geleden
  • ME TO ❤️

    Rowan ThainRowan ThainDag geleden